MODIFIED 1 N EXPANSION FOR THE DIRAC-EQUATION FOR SCREENED COULOMB POTENTIAL/

Authors
ROYCHOUDHURY R PANCHANAN S
Citation
R. Roychoudhury et S. Panchanan, MODIFIED 1 N EXPANSION FOR THE DIRAC-EQUATION FOR SCREENED COULOMB POTENTIAL/, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 48(11), 1993, pp. 1081-1085
Citations number
15
Categorie Soggetti
Chemistry Physical",Physics
Journal title
Zeitschrift fur Naturforschung. A, A journal of physical sciences → ACNP
ISSN journal
09320784
Volume
48
Issue
11
Year of publication
1993
Pages
1081 - 1085
Database
ISI
SICI code
0932-0784(1993)48:11<1081:M1NEFT>2.0.ZU;2-Z
Abstract
It is shown that if one chooses the shift parameter correctly then the lowest order term in the modified I/N expansion for the Dirac equatio n as formulated by Stepanov and Tutik gives accurate results for Coulo mb like potentials. Explicit eigenvalues have been obtained for the sc reened Coulomb potential V(r) = -upsilon0/r[1 - rlambda(1 - 1/z)/(1 rlambda)] , and these are compared with exact numerical results and th e results obtained by the choice of shift suggested by Stepanov and Tu tik.